Mold



Sept 8, 1925.

J. T. SENTROP, JR

MOLD

Filed Oct. 13. 1924 2 Sheets-Sheet 1 C/.aAZL-dnneef T45 mito aux nu,

2 Sheets-Sheet 2 ZIM-.30

anotan! J. vT. SENTROP, JR

uoLn

Filed oct. 13.

Sept. 8, 1925.

JazzU'c/J 1276 @witg/JE Patented Sept. 8, 1925.

NITE!) .STATES JOHANNES T. SENTROP, JR., lOIF GRAND RAPIDSpMICHIGAN.

MOLD.

I Appncauonriea october 13, V1924., seriliingmaazs. Y

T0 all 'whom t may concern:

Beit known that I, .loHANNns T. 'SnNTRoP, J r., a subj ect of the Queen of the Netherlands, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented new and useful Improvements in Molds, of which the following is a specification.-

The present invention relates to molds or forms for molding concrete beams, columns and the like; and its object is, generally, Vto provide such molds improved in various respects hereinafter appearing; and more lparticularly, to provide such molds having separable members whichmay be readily assem bled and disassembled; and further, to provide improved means for holding a plurality of such molds and the members of each yin such assembled position 3 Iand further, to provide improved separate members of such molds; and further, to provide in such molds members which may be readily shortened'or lengthened; and further, to provide such members which may be readily changed into different cross-sectional shapes.

These and any other objects hereinafter Vappearing are attained by, and the invention finds preferable embodiment in, the structure or structures hereinafter particularly described in the body of this specification and illustrated by the accompanying drawings, in which Figure 1 is a. top plan view of molds or forms, partially sectioned longitudinally on a horizontal plane corresponding to line 1-1 of Figure 2;

Figure2 is a longitudinal sectional view thereof taken on a vertical plane corresponding to line 2-2 of Figure 1; y

Figure 3 is a transverse sectional' view of the same taken on a vertical plane corresponding to line 3 3 of Figure 2; Y

Figure 4 is a like view of the same, omit- .ting certain extension pieces, and sho-wing the dimensions of certain parts somewhat variant from Figure 3; 'f

Figure 5 is a transverse sectional view of the molds taken` on a vertical plane corresponding to line 5-5 of Figures 2 and 6,

Figure 6 is a longitudinal sectional view of one of the members ofthe mold'taken on al vertical plane corresponding to line 6,-6 of Figure 5;' Figure 7 is a faceview of a transverse pant of another member lof the mold,V Figure 8 is a top plan view thereof; Figure 9`is a side edge view of the same; Figure 10 is a transverse Vsectional view of another part ofsaid member;`

Figure 11 is a transverse l'sectional lview of a telescoping pair of said par-ts; i Figure 12 is a side view ofv the end por- "tion'of one of the members* of the mold;

Figure 13 is an end view of'said member; Figure 14 is a side' View of teleseoping parts of one of the memberslof the mold; v

Figure v15 is atransverse sectional View of one-of 'said parts, showingits position lower than in'Figures 10"'and 11; A

Figure 16 is a face view ofan 'end member ofthe mold; v

Figure 17 is a. top plan view'thereof; ligure 18 isf a siede edge viewof the same; anc Y Y Figure 19 is a side viewof anfend portion of the mold, certain parts togetherr vwith the material formedin the mold being shown in central' verticalsection. i i

In the accompanying drawings aplurality of molds are shown Yadapted for molding concrete and the like'into structural forms, such as floor beams, columnsA and the'like. These molds are assembled side by side on a level floor, which desirably comprises spaced (apart` strips 1 suitably supported as by posts 2. rlhe several members ofeach mol-d, some of which members are common to adjacent molds, comprises the following: The inner member, designated generally 3, has a thin sheet metal part 4 curvedor bowed in transverse section,'and desirably bendableL to varyy such curvature. This innermember 3 has also a transverse supporting part Gfcont-actin'g the innersurface of the curved metal part 4 and comprising portions orhalves S'lying in approximately the same vertical planes, their inclined edges 9 contacting each other. These halves are detachably secured together by ,suitable means as `by the threaded bolt 10 passing through openings therein and carrying a wing nut 11. It will be seen that when this nut is tightened the halves of this part 6 are brought into edgewise contact with the inner surface of the sheet metal part 4 of this mold member 3; and whenjsaid nut is loosened the halves 7, 8 may "be readily separated from the metal part 4 and removed therefrom.

The longitudinal edges theshetl' metal part 4 are desirably provided with crosssectionally-angular metal strips 12 whose flanges 13 may be secured, as by screws 14, to the upper sides of the woo-den strips 15 as show/n in Figures 5,110 and'll'; vor they may be thus secured to theunder sides of of the mold'may beas shown in'theviews,

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said strips, or laid under the lower 'or intermediatelmembers 16 of themold as shown in Figure '115. Whenthus positionedhit will be seen that a cross-sectionally. smaller Vopen yspace 17 lis ma-de in the `molded workthan ismade when saidflange is positioned above the floor 1 as seen in Figures 5, lO'and 11.v

The outer (member, designated'gen'erally 18,

Vcommon to adjacent molds. lThis member comprises sideparts'lt), preferably of sheet metal conveXing angularly outwardly'and secured to upperfand lower wooden strips "20, 21,. which are` spaced apart by blocks 22.

`When itis desired to mold beams, columns andthe like having a largerdim'ension, eX,- tension' piecesy'24 maybe secured to the outer surface of one or both 'of these strips, as

shown in Figure 5. This outer member 18 of the mold 'mayj be kprovided with end Apieces 25 secured as'by screws26 to the "end "blocks 22. The intermediate members 16 of lthe mold rests lupon' said' floor between and contacting theinner member 3 and thelouterV member 18ofjthe mold as shown `in Figure 5. A plurality ofthe' molds are assembled side by side on the floor 1, as` indicated in the views, Vand V are heldv in Contact with Veach. other 5 by suitable 'means,- as the nails 30 driven vupwardly through' ther floor strips 1 and into the lower edges of the outer members 18 of themolds or into their lower eX- tension pieces 24, and also by `strips 31 v eX- ytending above the molds'and transversely thereof and secured, as vby nails' 32,Y to.' the upper edges' 'of said outer members'18 or their upper extensionpieces 24. End members 33 of the molds are particularlyV shown in Figures 16, 17 and y18, comprising `portions or halves 34,35 having rinclined contacting edges 36, `s irnil ar to suChedges of the vhalves of thetransverse supporting part 6 and similarly Vconnected together by ka bolt 37v`andnut 38.4 Thecornersof, these yend members shown notched'at 39 in .F iglure 16fto receiveV metal reinforcing rods 40 for the concrete work. Spaced inwardly from these end members 33, are transverse )curved metal parts 4 of the molds inner member?)` may be arranged to telescope Y' vea'chotherwto provide a m-old of greater or.

less length. This telescoping act-ion' may be readily provided for, when thestrips 5 15 areomittedentirely or are'shortenjed suiii-v ciently at their ends. Y A A e The reinforcing rods 40l at theupperand lower -sides of theworkmay be formed continuously as indicated in Figure 17 thus providing a bight portion whiclirmayfbe utilized as anchoring members forthe ends of the concretel beams or'columns. As indicated at the right handv side of Figure 5, the outer members 18 may be positioned with their thickerV porti-ons ldownward; or, as seen at the left hand side of said ,v iew, they may be positioned with their thicker. portions upward; so that beams or lcolumns thicker at oneside orthe other may be thus molded as'may be' desired. l The invention being intended to lbe pointed out ,in the claims, is not ltoy be limited ltoor by details 'of yconstruction ofl the particular embodiment or embodiments thereof--illus#l V trate'd by the drawings or hereinbe'fore described.

. Iclaimz 1. In mold: an'inner member comprising avplurality of longitudinallytelescopiiig upwardlylbowed portions; an outer,v member; an intermediate member 4contacting on its opposite sides' 'said inner andV outer members respectively; means vfor det/achab'ly securing said .members in ysaid rcontacting position.

V2. In a mold: anl inner member having a cross-sect-ionally-bowed partand a supporting part therein extending 'transversely Athereof and comprising ,portionshavingV inclined meeting edges, and means Vfor releasj ably holding said edges in contacting-position.

3. In agmold; an end member'coinprising portions having lnclinedmeetlngl edges, and meansV for releasably holding said 'edges in ','contacting position, said member` having notches in its outer edges adapte'dto' receive concrete-reinforcing rods. y

4. In a mold, an` outer member'fcomprising: yspaced strips extending in saidvmemberslongitudinal direction; blocks"inter mediate said strips" andv secured thereto;

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sheet sides secured to the opposite sides of the strips; an extension piece detaehably the strips. secured to the outer surface of one of said 5. In a inoid, an outer member Comprisstrips. 10 ing: spaced strips extending in said meni- In testimony whereof I have hereunto set 5 bers longitudinal direction; blocks intermy hand at Grand Rapids, Michigan, this mediate said strips and secured thereto; 10th day of October, 1924. sheet sides secured to the opposite sides of JOHANNES T. SENTROP, JR. 

